Proton switching as a driving force for the metal–organic complex-mediated growth of gold colloids

Abstract

A mono-protonated (bis(4 0 -(4-pyridyl)-2,2 0 :6 0 ,2 00 -terpyridine)iron(II)) complex [[Fe(ptpy)(Hptpy)](PF 6 ) 3 ] acts as a structure directing agent for larger gold colloids in the present investigation. We report here a H-bonded [Fe(ptpy)(Hptpy)](PF 6 ) 3 complex acting as an inter-linker for the complex-mediated growth of gold nanoparticles. This exploration discusses the possibility of proton switching in [Fe(ptpy)(Hptpy)](PF 6 ) 3 , which can interconvert the oxidation state of Fe between +2 and +3 at the interface of citrate-capped gold nanoparticles, enabling the complex-mediated growth of geometry-specific, large size gold colloids.

Prospective applications of two-dimensional materials beyond laboratory frontiers: A review

“…Figure 8 A demonstrates the schematic illustration of design strategy and mode of use for the multifunctional endoscope system that integrates bioelectronics with the aid of theragnostic nanoparticles. A transparent bioelectronic grid, constituting graphene prepared by chemical vapor deposition, doped with gold, 163 and deposited with iridium oxide was used. 164 Tumor detection by pH ablation sensors ( Figure 8 B), was able to differentiate the tumor tissues from normal ones according to impedance differences.…”